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We report on a comprehensive study of the magnetization, resistivity and heat capacity on the single crystals of Ce₂RhGa₁₂ synthesized using Ga flux. Single crystal X-ray diffraction data confirm the tetragonal Pb/nbm structure of Ce₂RhGa₁₂, which is isostructural to Ce₂PdGa₁₂. Ce₂RhGa₁₂ orders antiferromagnetically at T_N = 3.5 K and exhibits anisotropic magnetic behavior, inferred from the magnetization and resistivity data, taken along the two principal crystallographic directions of the crystal, viz., along [100] and [001]. The anisotropic magnetic response of Ce₂RhGa₁₂ establishes [001] as the easy axis of magnetization, and a weak meta-magnetic transition is also observed in the magnetic isotherm at 2K along the same axis. A sharp peak in specific heat signals the bulk antiferromagnetic transition at T_N = 3.5 K, which shifts to lower temperatures in low applied fields. The electrical resistivity along the two directions shows metallic behavior from 300K down to 1.8K and establishes Ce₂RhGa₁₂ as a normal, trivalent cerium compound.

Anisotropic magnetic, transport and thermodynamic properties of novel tetragonal Ce₂RhGa₁₂ compound S. Nallamuthu, T.P. Rashid, V. Krishnakumar, C. Besnard, H. Hagemann, M. Reiffers and R. Nagalakshmi Journal of Alloys and Compounds, 604 (2014), p379-383 DOI:10.1016/j.jallcom.2014.03.067 \| unige:37941 \| Article HTML
We report on a comprehensive study of the magnetization, resistivity and heat capacity on the single crystals of Ce₂RhGa₁₂ synthesized using Ga flux. Single crystal X-ray diffraction data confirm the tetragonal Pb/nbm structure of Ce₂RhGa₁₂, which is isostructural to Ce₂PdGa₁₂. Ce₂RhGa₁₂ orders antiferromagnetically at T_N = 3.5 K and exhibits anisotropic magnetic behavior, inferred from the magnetization and resistivity data, taken along the two principal crystallographic directions of the crystal, viz., along [100] and [001]. The anisotropic magnetic response of Ce₂RhGa₁₂ establishes [001] as the easy axis of magnetization, and a weak meta-magnetic transition is also observed in the magnetic isotherm at 2K along the same axis. A sharp peak in specific heat signals the bulk antiferromagnetic transition at T_N = 3.5 K, which shifts to lower temperatures in low applied fields. The electrical resistivity along the two directions shows metallic behavior from 300K down to 1.8K and establishes Ce₂RhGa₁₂ as a normal, trivalent cerium compound.

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